# STARTECH Cisco QSFP-40G-SR4-S Compatible QSFP+ Module - 40GBASE-SR4 - 40GbE Multimode Fiber MMF Optic Transceiver - 40GbE QSFP+ MPO 100m - 850nm DDM Cisco Firepower | ASR9000 (QSFP-40G-SR4-S-ST) (QSFP-40G-SR4-S-ST)

40 Gbps | Multi Mode Fiber | MPO | 100 m (328 ft) | Lifetime WarrantyThe QSFP-40G-SR4-S-ST is a Cisco QSFP-40G-SR4-S compatible fiber transceiver module that has been designed, programmed and tested to work with Cisco brand switches and routers. It delivers dependable 40 GbE connectivity over fiber cable, for 40GBASE-SR4 compliant networks, with a maximum distance of up to 100 m (328 ft).Technical Specifications:• Wavelength: 850nm• Maximum Data Transfer Rate: 40 Gbps• Type: Multi Mode Fiber• Connection Type: MPO Connector• Maximum Transfer Distance: 100 m (328 ft)• MTBF: 244,610,583 hours• Power Consumption: Low power consumption• Digital Diagnostics Monitoring (DDM): YesThis QSFP+ fiber module is hot-swappable, making upgrades and replacements seamless by minimizing network disruptions.StarTech.com SFPsAll StarTech.com SFP & SFP+ transceiver modules are backed by a lifetime warranty and free lifetime multilingual technical support. StarTech.com offers a wide variety of SFP modules and direct-attach SFP cables, providing the convenience and reliability you need to ensure dependable network performance.The StarTech.com Advantage

## Details

- **Price:** 68.23 AUD
- **Vendor:** STARTECH
- **Type:** Network Transceiver Modules
- **Tags:** Ingram, Network Transceiver Modules, Repeaters & Transceivers, UPOELXCBS763

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 68.23 AUD | In stock |

## Images

- STARTECH Cisco QSFP-40G-SR4-S Compatible QSFP+ Module - 40GBASE-SR4 - 40GbE Multimode Fiber MMF Optic Transceiver - 40GbE QSFP+ MPO 100m - 850nm DDM Cisco Firepower | ASR9000 (QSFP-40G-SR4-S-ST) (QSFP-40G-SR4-S-ST)
- STARTECH Cisco QSFP-40G-SR4-S Compatible QSFP+ Module - 40GBASE-SR4 - 40GbE Multimode Fiber MMF Optic Transceiver - 40GbE QSFP+ MPO 100m - 850nm DDM Cisco Firepower | ASR9000 (QSFP-40G-SR4-S-ST) (QSFP-40G-SR4-S-ST)
- STARTECH Cisco QSFP-40G-SR4-S Compatible QSFP+ Module - 40GBASE-SR4 - 40GbE Multimode Fiber MMF Optic Transceiver - 40GbE QSFP+ MPO 100m - 850nm DDM Cisco Firepower | ASR9000 (QSFP-40G-SR4-S-ST) (QSFP-40G-SR4-S-ST)
- STARTECH Cisco QSFP-40G-SR4-S Compatible QSFP+ Module - 40GBASE-SR4 - 40GbE Multimode Fiber MMF Optic Transceiver - 40GbE QSFP+ MPO 100m - 850nm DDM Cisco Firepower | ASR9000 (QSFP-40G-SR4-S-ST) (QSFP-40G-SR4-S-ST)

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> Source: [TechForGood](https://techforgood.com.au/products/startech-com-cisco-qsfp-40g-sr4-s-compatible-qsfp-module-40gbase-sr4-40gbe-multimode-fiber-mmf-optic)
> Updated: 2026-05-12